Created
August 23, 2018 04:43
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中文字符判断
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| import java.util.regex.Pattern; | |
| /** | |
| * 字符通用工具类 | |
| * | |
| * @author <a href="http://www.micmiu.com">Michael Sun</a>; | |
| */ | |
| public class CharUtil { | |
| /** | |
| * @param args | |
| */ | |
| public static void main(String[] args) { | |
| String[] strArr = new String[] { | |
| "www.micmiu.com", | |
| "!@#$%^&*()_+{}[]|\"'?/:;<>,.", | |
| "！￥……（）——：；“”‘’《》，。？、", | |
| "不要啊", | |
| "やめて", | |
| "韩佳人", | |
| "한가인", | |
| }; | |
| for (String str : strArr) { | |
| System.out.println("===========> 测试字符串：" + str); | |
| System.out.println("正则判断：" + isChineseByREG(str) + " -- " + isChineseByName(str)); | |
| System.out.println("Unicode判断结果 ：" + isChinese(str)); | |
| System.out.println("详细判断列表："); | |
| char[] ch = str.toCharArray(); | |
| for (char c : ch) { | |
| System.out.println(c + " --> " + (isChinese(c) ? "是" : "否")); | |
| } | |
| } | |
| } | |
| // 根据Unicode编码完美的判断中文汉字和符号 | |
| private static boolean isChinese(char c) { | |
| Character.UnicodeBlock ub = Character.UnicodeBlock.of(c); | |
| return ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS | |
| || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS | |
| || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A | |
| || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B | |
| || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION | |
| || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS | |
| || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION; | |
| } | |
| // 完整的判断中文汉字和符号 | |
| public static boolean isChinese(String strName) { | |
| char[] ch = strName.toCharArray(); | |
| for (char c : ch) { | |
| if (isChinese(c)) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| // 只能判断部分CJK字符（CJK统一汉字） | |
| public static boolean isChineseByREG(String str) { | |
| if (str == null) { | |
| return false; | |
| } | |
| Pattern pattern = Pattern.compile("[\\u4E00-\\u9FBF]+"); | |
| return pattern.matcher(str.trim()).find(); | |
| } | |
| // 只能判断部分CJK字符（CJK统一汉字） | |
| public static boolean isChineseByName(String str) { | |
| if (str == null) { | |
| return false; | |
| } | |
| // 大小写不同：\\p 表示包含，\\P 表示不包含 | |
| // \\p{Cn} 的意思为 Unicode 中未被定义字符的编码，\\P{Cn} 就表示 Unicode中已经被定义字符的编码 | |
| String reg = "\\p{InCJK Unified Ideographs}&&\\P{Cn}"; | |
| Pattern pattern = Pattern.compile(reg); | |
| return pattern.matcher(str.trim()).find(); | |
| } | |
| } |
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